Can a bantam lay a regular size egg???

[Duker17]

I have 6 hens that are about 8 months old, one of which is a silver duckwing bantam, the rest are standard size. The bantam has laid VERY sporadically (or she's laying somewhere I haven't found) for the last 3-4 months just like everyone else. Her eggs were always miniature size compared to the others. Yesterday there were 6 full size eggs in the nesting boxes! Is it possible my bantam laid a regular sized egg or that one of the other hens could have laid 2 eggs in one day? I check for eggs twice a day so I know it wasn't leftover from the day before. Any thoughts??

 

[sourland]

Ouch!